全站仪与PC机通讯时,需要设置的通讯参数内容一般为()
A.波特率、字符协议
B.字符协议、通讯协议
C.波特率、通讯协议
D.波特率、字符协议、通讯协议
参考答案:D
The poor child stood there, and ________ what to do, turned to his father for help. [ ]
A. not knowing
B. not knew
C. not to know
D. not know
借款人申请个人住房贷款,需提供不低于房价30%的首付款凭证。